21687291

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{1277}}^1$

素因数の和:1340

約数の個数: 32

約数和(自身を含む): 34966080

約数和(自身を除く): 13278789

約数列:

[1, 3, 9, 17, 27, 37, 51, 111, 153, 333, 459, 629, 999, 1277, 1887, 3831, 5661, 11493, 16983, 21709, 34479, 47249, 65127, 141747, 195381, 425241, 586143, 803233, 1275723, 2409699, 7229097, 21687291]

約数ペア:

[(1, 21687291), (3, 7229097), (9, 2409699), (17, 1275723), (27, 803233), (37, 586143), (51, 425241), (111, 195381), (153, 141747), (333, 65127), (459, 47249), (629, 34479), (999, 21709), (1277, 16983), (1887, 11493), (3831, 5661)]